Finding the Third Proportional to 3,706,565 and 8,121,715

Step by Step Solution

1. Step 1: Write the proportion equation
   3,706,565 : 8,121,715 = 8,121,715 : x
2. Step 2: Convert to fraction form
   3,706,565/8,121,715 = 8,121,715/x
3. Step 3: Cross multiply
   3,706,565x = 8,121,715 × 8,121,715
4. Step 4: Simplify right side
   3,706,565x = 65,962,254,541,225
5. Step 5: Solve for x
   x = 65,962,254,541,225/3,706,565
6. Step 6: Final answer
   x = 17,796,060.38