Finding the Third Proportional to 8,616,901.50 and 12,758,978.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,616,901.50 : 12,758,978.25 = 12,758,978.25 : x
2. Step 2: Convert to fraction form
   8,616,901.50/12,758,978.25 = 12,758,978.25/x
3. Step 3: Cross multiply
   8,616,901.50x = 12,758,978.25 × 12,758,978.25
4. Step 4: Simplify right side
   8,616,901.50x = 162,791,525,983,973.06
5. Step 5: Solve for x
   x = 162,791,525,983,973.06/8,616,901.50
6. Step 6: Final answer
   x = 18,892,118.70