Finding the Third Proportional to 30,777.38 and 66,152.53

Step by Step Solution

1. Step 1: Write the proportion equation
   30,777.38 : 66,152.53 = 66,152.53 : x
2. Step 2: Convert to fraction form
   30,777.38/66,152.53 = 66,152.53/x
3. Step 3: Cross multiply
   30,777.38x = 66,152.53 × 66,152.53
4. Step 4: Simplify right side
   30,777.38x = 4,376,157,390.78
5. Step 5: Solve for x
   x = 4,376,157,390.78/30,777.38
6. Step 6: Final answer
   x = 142,187.48