Finding the Third Proportional to 31,029.09 and 66,977.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,029.09 : 66,977.72 = 66,977.72 : x
2. Step 2: Convert to fraction form
   31,029.09/66,977.72 = 66,977.72/x
3. Step 3: Cross multiply
   31,029.09x = 66,977.72 × 66,977.72
4. Step 4: Simplify right side
   31,029.09x = 4,486,014,808.95
5. Step 5: Solve for x
   x = 4,486,014,808.95/31,029.09
6. Step 6: Final answer
   x = 144,574.47