Finding the Third Proportional to 58,791 and 138,757.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,791 : 138,757.50 = 138,757.50 : x
2. Step 2: Convert to fraction form
   58,791/138,757.50 = 138,757.50/x
3. Step 3: Cross multiply
   58,791x = 138,757.50 × 138,757.50
4. Step 4: Simplify right side
   58,791x = 19,253,643,806.25
5. Step 5: Solve for x
   x = 19,253,643,806.25/58,791
6. Step 6: Final answer
   x = 327,493.05