Finding the Third Proportional to 155,118 and 248,875.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,118 : 248,875.50 = 248,875.50 : x
2. Step 2: Convert to fraction form
   155,118/248,875.50 = 248,875.50/x
3. Step 3: Cross multiply
   155,118x = 248,875.50 × 248,875.50
4. Step 4: Simplify right side
   155,118x = 61,939,014,500.25
5. Step 5: Solve for x
   x = 61,939,014,500.25/155,118
6. Step 6: Final answer
   x = 399,302.56