Finding the Third Proportional to 5,615,902 and 8,626,642

Step by Step Solution

1. Step 1: Write the proportion equation
   5,615,902 : 8,626,642 = 8,626,642 : x
2. Step 2: Convert to fraction form
   5,615,902/8,626,642 = 8,626,642/x
3. Step 3: Cross multiply
   5,615,902x = 8,626,642 × 8,626,642
4. Step 4: Simplify right side
   5,615,902x = 74,418,952,196,164
5. Step 5: Solve for x
   x = 74,418,952,196,164/5,615,902
6. Step 6: Final answer
   x = 13,251,469.17