Finding the Third Proportional to 5,402,134 and 8,240,403

Step by Step Solution

1. Step 1: Write the proportion equation
   5,402,134 : 8,240,403 = 8,240,403 : x
2. Step 2: Convert to fraction form
   5,402,134/8,240,403 = 8,240,403/x
3. Step 3: Cross multiply
   5,402,134x = 8,240,403 × 8,240,403
4. Step 4: Simplify right side
   5,402,134x = 67,904,241,602,409
5. Step 5: Solve for x
   x = 67,904,241,602,409/5,402,134
6. Step 6: Final answer
   x = 12,569,892.12