Finding the Third Proportional to 163,926 and 253,165.50

Step by Step Solution

1. Step 1: Write the proportion equation
   163,926 : 253,165.50 = 253,165.50 : x
2. Step 2: Convert to fraction form
   163,926/253,165.50 = 253,165.50/x
3. Step 3: Cross multiply
   163,926x = 253,165.50 × 253,165.50
4. Step 4: Simplify right side
   163,926x = 64,092,770,390.25
5. Step 5: Solve for x
   x = 64,092,770,390.25/163,926
6. Step 6: Final answer
   x = 390,986.00