Finding the Third Proportional to 31,154.63 and 66,683.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,154.63 : 66,683.25 = 66,683.25 : x
2. Step 2: Convert to fraction form
   31,154.63/66,683.25 = 66,683.25/x
3. Step 3: Cross multiply
   31,154.63x = 66,683.25 × 66,683.25
4. Step 4: Simplify right side
   31,154.63x = 4,446,655,830.56
5. Step 5: Solve for x
   x = 4,446,655,830.56/31,154.63
6. Step 6: Final answer
   x = 142,728.59