Finding the Third Proportional to 162,993 and 257,611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,993 : 257,611.50 = 257,611.50 : x
2. Step 2: Convert to fraction form
   162,993/257,611.50 = 257,611.50/x
3. Step 3: Cross multiply
   162,993x = 257,611.50 × 257,611.50
4. Step 4: Simplify right side
   162,993x = 66,363,684,932.25
5. Step 5: Solve for x
   x = 66,363,684,932.25/162,993
6. Step 6: Final answer
   x = 407,156.66