Finding the Third Proportional to 13,356,651 and 21,166,833

Step by Step Solution

1. Step 1: Write the proportion equation
   13,356,651 : 21,166,833 = 21,166,833 : x
2. Step 2: Convert to fraction form
   13,356,651/21,166,833 = 21,166,833/x
3. Step 3: Cross multiply
   13,356,651x = 21,166,833 × 21,166,833
4. Step 4: Simplify right side
   13,356,651x = 448,034,819,249,889
5. Step 5: Solve for x
   x = 448,034,819,249,889/13,356,651
6. Step 6: Final answer
   x = 33,543,948.95