Finding the Third Proportional to 58,776.50 and 138,726

Step by Step Solution

1. Step 1: Write the proportion equation
   58,776.50 : 138,726 = 138,726 : x
2. Step 2: Convert to fraction form
   58,776.50/138,726 = 138,726/x
3. Step 3: Cross multiply
   58,776.50x = 138,726 × 138,726
4. Step 4: Simplify right side
   58,776.50x = 19,244,903,076
5. Step 5: Solve for x
   x = 19,244,903,076/58,776.50
6. Step 6: Final answer
   x = 327,425.13