Finding the Third Proportional to 5,426,165 and 8,637,398

Step by Step Solution

1. Step 1: Write the proportion equation
   5,426,165 : 8,637,398 = 8,637,398 : x
2. Step 2: Convert to fraction form
   5,426,165/8,637,398 = 8,637,398/x
3. Step 3: Cross multiply
   5,426,165x = 8,637,398 × 8,637,398
4. Step 4: Simplify right side
   5,426,165x = 74,604,644,210,404
5. Step 5: Solve for x
   x = 74,604,644,210,404/5,426,165
6. Step 6: Final answer
   x = 13,749,055.59