Finding the Third Proportional to 10,313,499 and 21,856,389

Step by Step Solution

1. Step 1: Write the proportion equation
   10,313,499 : 21,856,389 = 21,856,389 : x
2. Step 2: Convert to fraction form
   10,313,499/21,856,389 = 21,856,389/x
3. Step 3: Cross multiply
   10,313,499x = 21,856,389 × 21,856,389
4. Step 4: Simplify right side
   10,313,499x = 477,701,740,119,321
5. Step 5: Solve for x
   x = 477,701,740,119,321/10,313,499
6. Step 6: Final answer
   x = 46,318,106.02