Finding the Third Proportional to 74,254.50 and 121,900

Step by Step Solution

1. Step 1: Write the proportion equation
   74,254.50 : 121,900 = 121,900 : x
2. Step 2: Convert to fraction form
   74,254.50/121,900 = 121,900/x
3. Step 3: Cross multiply
   74,254.50x = 121,900 × 121,900
4. Step 4: Simplify right side
   74,254.50x = 14,859,610,000
5. Step 5: Solve for x
   x = 14,859,610,000/74,254.50
6. Step 6: Final answer
   x = 200,117.30