Finding the Third Proportional to 6,438,567 and 8,713,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,438,567 : 8,713,066.50 = 8,713,066.50 : x
2. Step 2: Convert to fraction form
   6,438,567/8,713,066.50 = 8,713,066.50/x
3. Step 3: Cross multiply
   6,438,567x = 8,713,066.50 × 8,713,066.50
4. Step 4: Simplify right side
   6,438,567x = 75,917,527,833,422.25
5. Step 5: Solve for x
   x = 75,917,527,833,422.25/6,438,567
6. Step 6: Final answer
   x = 11,791,059.69