Finding the Third Proportional to 56,409.75 and 83,999.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,409.75 : 83,999.25 = 83,999.25 : x
2. Step 2: Convert to fraction form
   56,409.75/83,999.25 = 83,999.25/x
3. Step 3: Cross multiply
   56,409.75x = 83,999.25 × 83,999.25
4. Step 4: Simplify right side
   56,409.75x = 7,055,874,000.56
5. Step 5: Solve for x
   x = 7,055,874,000.56/56,409.75
6. Step 6: Final answer
   x = 125,082.53