Finding the Third Proportional to 3,706,563 and 8,121,711

Step by Step Solution

1. Step 1: Write the proportion equation
   3,706,563 : 8,121,711 = 8,121,711 : x
2. Step 2: Convert to fraction form
   3,706,563/8,121,711 = 8,121,711/x
3. Step 3: Cross multiply
   3,706,563x = 8,121,711 × 8,121,711
4. Step 4: Simplify right side
   3,706,563x = 65,962,189,567,521
5. Step 5: Solve for x
   x = 65,962,189,567,521/3,706,563
6. Step 6: Final answer
   x = 17,796,052.45