Finding the Third Proportional to 118,947 and 256,462.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,947 : 256,462.50 = 256,462.50 : x
2. Step 2: Convert to fraction form
   118,947/256,462.50 = 256,462.50/x
3. Step 3: Cross multiply
   118,947x = 256,462.50 × 256,462.50
4. Step 4: Simplify right side
   118,947x = 65,773,013,906.25
5. Step 5: Solve for x
   x = 65,773,013,906.25/118,947
6. Step 6: Final answer
   x = 552,960.68