Finding the Third Proportional to 31,043 and 67,487

Step by Step Solution

1. Step 1: Write the proportion equation
   31,043 : 67,487 = 67,487 : x
2. Step 2: Convert to fraction form
   31,043/67,487 = 67,487/x
3. Step 3: Cross multiply
   31,043x = 67,487 × 67,487
4. Step 4: Simplify right side
   31,043x = 4,554,495,169
5. Step 5: Solve for x
   x = 4,554,495,169/31,043
6. Step 6: Final answer
   x = 146,715.69