Finding the Third Proportional to 31,299.75 and 67,051.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,299.75 : 67,051.13 = 67,051.13 : x
2. Step 2: Convert to fraction form
   31,299.75/67,051.13 = 67,051.13/x
3. Step 3: Cross multiply
   31,299.75x = 67,051.13 × 67,051.13
4. Step 4: Simplify right side
   31,299.75x = 4,495,853,363.77
5. Step 5: Solve for x
   x = 4,495,853,363.77/31,299.75
6. Step 6: Final answer
   x = 143,638.63