Finding the Third Proportional to 57,172.50 and 83,683.13

Step by Step Solution

1. Step 1: Write the proportion equation
   57,172.50 : 83,683.13 = 83,683.13 : x
2. Step 2: Convert to fraction form
   57,172.50/83,683.13 = 83,683.13/x
3. Step 3: Cross multiply
   57,172.50x = 83,683.13 × 83,683.13
4. Step 4: Simplify right side
   57,172.50x = 7,002,865,409.77
5. Step 5: Solve for x
   x = 7,002,865,409.77/57,172.50
6. Step 6: Final answer
   x = 122,486.60