Finding the Third Proportional to 81,513.50 and 171,875

Step by Step Solution

1. Step 1: Write the proportion equation
   81,513.50 : 171,875 = 171,875 : x
2. Step 2: Convert to fraction form
   81,513.50/171,875 = 171,875/x
3. Step 3: Cross multiply
   81,513.50x = 171,875 × 171,875
4. Step 4: Simplify right side
   81,513.50x = 29,541,015,625
5. Step 5: Solve for x
   x = 29,541,015,625/81,513.50
6. Step 6: Final answer
   x = 362,406.42