Finding the Third Proportional to 5,648,448 and 8,620,468

Step by Step Solution

1. Step 1: Write the proportion equation
   5,648,448 : 8,620,468 = 8,620,468 : x
2. Step 2: Convert to fraction form
   5,648,448/8,620,468 = 8,620,468/x
3. Step 3: Cross multiply
   5,648,448x = 8,620,468 × 8,620,468
4. Step 4: Simplify right side
   5,648,448x = 74,312,468,539,024
5. Step 5: Solve for x
   x = 74,312,468,539,024/5,648,448
6. Step 6: Final answer
   x = 13,156,263.20