Finding the Third Proportional to 118,312.50 and 172,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,312.50 : 172,066.50 = 172,066.50 : x
2. Step 2: Convert to fraction form
   118,312.50/172,066.50 = 172,066.50/x
3. Step 3: Cross multiply
   118,312.50x = 172,066.50 × 172,066.50
4. Step 4: Simplify right side
   118,312.50x = 29,606,880,422.25
5. Step 5: Solve for x
   x = 29,606,880,422.25/118,312.50
6. Step 6: Final answer
   x = 250,243.05