Finding the Third Proportional to 10,640,366 and 16,509,468

Step by Step Solution

1. Step 1: Write the proportion equation
   10,640,366 : 16,509,468 = 16,509,468 : x
2. Step 2: Convert to fraction form
   10,640,366/16,509,468 = 16,509,468/x
3. Step 3: Cross multiply
   10,640,366x = 16,509,468 × 16,509,468
4. Step 4: Simplify right side
   10,640,366x = 272,562,533,643,024
5. Step 5: Solve for x
   x = 272,562,533,643,024/10,640,366
6. Step 6: Final answer
   x = 25,615,898.33