Finding the Third Proportional to 56,631.50 and 89,969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,631.50 : 89,969.50 = 89,969.50 : x
2. Step 2: Convert to fraction form
   56,631.50/89,969.50 = 89,969.50/x
3. Step 3: Cross multiply
   56,631.50x = 89,969.50 × 89,969.50
4. Step 4: Simplify right side
   56,631.50x = 8,094,510,930.25
5. Step 5: Solve for x
   x = 8,094,510,930.25/56,631.50
6. Step 6: Final answer
   x = 142,933.01