Finding the Third Proportional to 155,127 and 248,887.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,127 : 248,887.50 = 248,887.50 : x
2. Step 2: Convert to fraction form
   155,127/248,887.50 = 248,887.50/x
3. Step 3: Cross multiply
   155,127x = 248,887.50 × 248,887.50
4. Step 4: Simplify right side
   155,127x = 61,944,987,656.25
5. Step 5: Solve for x
   x = 61,944,987,656.25/155,127
6. Step 6: Final answer
   x = 399,317.90