Finding the Third Proportional to 86,172 and 124,114.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,172 : 124,114.50 = 124,114.50 : x
2. Step 2: Convert to fraction form
   86,172/124,114.50 = 124,114.50/x
3. Step 3: Cross multiply
   86,172x = 124,114.50 × 124,114.50
4. Step 4: Simplify right side
   86,172x = 15,404,409,110.25
5. Step 5: Solve for x
   x = 15,404,409,110.25/86,172
6. Step 6: Final answer
   x = 178,763.51