Finding the Third Proportional to 62,421.50 and 136,521

Step by Step Solution

1. Step 1: Write the proportion equation
   62,421.50 : 136,521 = 136,521 : x
2. Step 2: Convert to fraction form
   62,421.50/136,521 = 136,521/x
3. Step 3: Cross multiply
   62,421.50x = 136,521 × 136,521
4. Step 4: Simplify right side
   62,421.50x = 18,637,983,441
5. Step 5: Solve for x
   x = 18,637,983,441/62,421.50
6. Step 6: Final answer
   x = 298,582.75