Finding the Third Proportional to 58,816.50 and 138,824.25

Step by Step Solution

1. Step 1: Write the proportion equation
   58,816.50 : 138,824.25 = 138,824.25 : x
2. Step 2: Convert to fraction form
   58,816.50/138,824.25 = 138,824.25/x
3. Step 3: Cross multiply
   58,816.50x = 138,824.25 × 138,824.25
4. Step 4: Simplify right side
   58,816.50x = 19,272,172,388.06
5. Step 5: Solve for x
   x = 19,272,172,388.06/58,816.50
6. Step 6: Final answer
   x = 327,666.09