Finding the Third Proportional to 118,402.50 and 253,599

Step by Step Solution

1. Step 1: Write the proportion equation
   118,402.50 : 253,599 = 253,599 : x
2. Step 2: Convert to fraction form
   118,402.50/253,599 = 253,599/x
3. Step 3: Cross multiply
   118,402.50x = 253,599 × 253,599
4. Step 4: Simplify right side
   118,402.50x = 64,312,452,801
5. Step 5: Solve for x
   x = 64,312,452,801/118,402.50
6. Step 6: Final answer
   x = 543,168.03