Finding the Third Proportional to 31,082.91 and 66,528.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,082.91 : 66,528.56 = 66,528.56 : x
2. Step 2: Convert to fraction form
   31,082.91/66,528.56 = 66,528.56/x
3. Step 3: Cross multiply
   31,082.91x = 66,528.56 × 66,528.56
4. Step 4: Simplify right side
   31,082.91x = 4,426,049,628.32
5. Step 5: Solve for x
   x = 4,426,049,628.32/31,082.91
6. Step 6: Final answer
   x = 142,394.97