Finding the Third Proportional to 9,819,368,751.50 and 21,539,817,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819,368,751.50 : 21,539,817,868.50 = 21,539,817,868.50 : x
2. Step 2: Convert to fraction form
   9,819,368,751.50/21,539,817,868.50 = 21,539,817,868.50/x
3. Step 3: Cross multiply
   9,819,368,751.50x = 21,539,817,868.50 × 21,539,817,868.50
4. Step 4: Simplify right side
   9,819,368,751.50x = 463,963,753,808,151,904,256
5. Step 5: Solve for x
   x = 463,963,753,808,151,904,256/9,819,368,751.50
6. Step 6: Final answer
   x = 47,249,855,418.38