Finding the Third Proportional to 78,374.50 and 121,396

Step by Step Solution

1. Step 1: Write the proportion equation
   78,374.50 : 121,396 = 121,396 : x
2. Step 2: Convert to fraction form
   78,374.50/121,396 = 121,396/x
3. Step 3: Cross multiply
   78,374.50x = 121,396 × 121,396
4. Step 4: Simplify right side
   78,374.50x = 14,736,988,816
5. Step 5: Solve for x
   x = 14,736,988,816/78,374.50
6. Step 6: Final answer
   x = 188,032.95