Finding the Third Proportional to 56,407.50 and 74,875.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,407.50 : 74,875.50 = 74,875.50 : x
2. Step 2: Convert to fraction form
   56,407.50/74,875.50 = 74,875.50/x
3. Step 3: Cross multiply
   56,407.50x = 74,875.50 × 74,875.50
4. Step 4: Simplify right side
   56,407.50x = 5,606,340,500.25
5. Step 5: Solve for x
   x = 5,606,340,500.25/56,407.50
6. Step 6: Final answer
   x = 99,389.98