Finding the Third Proportional to 118,300.50 and 242,129.25

Step by Step Solution

1. Step 1: Write the proportion equation
   118,300.50 : 242,129.25 = 242,129.25 : x
2. Step 2: Convert to fraction form
   118,300.50/242,129.25 = 242,129.25/x
3. Step 3: Cross multiply
   118,300.50x = 242,129.25 × 242,129.25
4. Step 4: Simplify right side
   118,300.50x = 58,626,573,705.56
5. Step 5: Solve for x
   x = 58,626,573,705.56/118,300.50
6. Step 6: Final answer
   x = 495,573.34