Finding the Third Proportional to 4,909,312 and 10,159,488

Step by Step Solution

1. Step 1: Write the proportion equation
   4,909,312 : 10,159,488 = 10,159,488 : x
2. Step 2: Convert to fraction form
   4,909,312/10,159,488 = 10,159,488/x
3. Step 3: Cross multiply
   4,909,312x = 10,159,488 × 10,159,488
4. Step 4: Simplify right side
   4,909,312x = 103,215,196,422,144
5. Step 5: Solve for x
   x = 103,215,196,422,144/4,909,312
6. Step 6: Final answer
   x = 21,024,370.91