Finding the Third Proportional to 5,605,920 and 8,657,316

Step by Step Solution

1. Step 1: Write the proportion equation
   5,605,920 : 8,657,316 = 8,657,316 : x
2. Step 2: Convert to fraction form
   5,605,920/8,657,316 = 8,657,316/x
3. Step 3: Cross multiply
   5,605,920x = 8,657,316 × 8,657,316
4. Step 4: Simplify right side
   5,605,920x = 74,949,120,323,856
5. Step 5: Solve for x
   x = 74,949,120,323,856/5,605,920
6. Step 6: Final answer
   x = 13,369,637.87