Finding the Third Proportional to 31,569.75 and 69,086.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,569.75 : 69,086.25 = 69,086.25 : x
2. Step 2: Convert to fraction form
   31,569.75/69,086.25 = 69,086.25/x
3. Step 3: Cross multiply
   31,569.75x = 69,086.25 × 69,086.25
4. Step 4: Simplify right side
   31,569.75x = 4,772,909,939.06
5. Step 5: Solve for x
   x = 4,772,909,939.06/31,569.75
6. Step 6: Final answer
   x = 151,186.18