Finding the Third Proportional to 62,920 and 138,273.50

Step by Step Solution

1. Step 1: Write the proportion equation
   62,920 : 138,273.50 = 138,273.50 : x
2. Step 2: Convert to fraction form
   62,920/138,273.50 = 138,273.50/x
3. Step 3: Cross multiply
   62,920x = 138,273.50 × 138,273.50
4. Step 4: Simplify right side
   62,920x = 19,119,560,802.25
5. Step 5: Solve for x
   x = 19,119,560,802.25/62,920
6. Step 6: Final answer
   x = 303,870.96