Finding the Third Proportional to 163,350 and 256,702.50

Step by Step Solution

1. Step 1: Write the proportion equation
   163,350 : 256,702.50 = 256,702.50 : x
2. Step 2: Convert to fraction form
   163,350/256,702.50 = 256,702.50/x
3. Step 3: Cross multiply
   163,350x = 256,702.50 × 256,702.50
4. Step 4: Simplify right side
   163,350x = 65,896,173,506.25
5. Step 5: Solve for x
   x = 65,896,173,506.25/163,350
6. Step 6: Final answer
   x = 403,404.80