Finding the Third Proportional to 56,637.75 and 89,978.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,637.75 : 89,978.25 = 89,978.25 : x
2. Step 2: Convert to fraction form
   56,637.75/89,978.25 = 89,978.25/x
3. Step 3: Cross multiply
   56,637.75x = 89,978.25 × 89,978.25
4. Step 4: Simplify right side
   56,637.75x = 8,096,085,473.06
5. Step 5: Solve for x
   x = 8,096,085,473.06/56,637.75
6. Step 6: Final answer
   x = 142,945.04