Finding the Third Proportional to 62,808 and 136,890.50

Step by Step Solution

1. Step 1: Write the proportion equation
   62,808 : 136,890.50 = 136,890.50 : x
2. Step 2: Convert to fraction form
   62,808/136,890.50 = 136,890.50/x
3. Step 3: Cross multiply
   62,808x = 136,890.50 × 136,890.50
4. Step 4: Simplify right side
   62,808x = 18,739,008,990.25
5. Step 5: Solve for x
   x = 18,739,008,990.25/62,808
6. Step 6: Final answer
   x = 298,353.86