Finding the Third Proportional to 78,744.66 and 121,598.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,744.66 : 121,598.72 = 121,598.72 : x
2. Step 2: Convert to fraction form
   78,744.66/121,598.72 = 121,598.72/x
3. Step 3: Cross multiply
   78,744.66x = 121,598.72 × 121,598.72
4. Step 4: Simplify right side
   78,744.66x = 14,786,248,401.64
5. Step 5: Solve for x
   x = 14,786,248,401.64/78,744.66
6. Step 6: Final answer
   x = 187,774.63