Finding the Third Proportional to 31,322.95 and 66,139.03

Step by Step Solution

1. Step 1: Write the proportion equation
   31,322.95 : 66,139.03 = 66,139.03 : x
2. Step 2: Convert to fraction form
   31,322.95/66,139.03 = 66,139.03/x
3. Step 3: Cross multiply
   31,322.95x = 66,139.03 × 66,139.03
4. Step 4: Simplify right side
   31,322.95x = 4,374,371,454.69
5. Step 5: Solve for x
   x = 4,374,371,454.69/31,322.95
6. Step 6: Final answer
   x = 139,653.86