Finding the Third Proportional to 155,064 and 245,940

Step by Step Solution

1. Step 1: Write the proportion equation
   155,064 : 245,940 = 245,940 : x
2. Step 2: Convert to fraction form
   155,064/245,940 = 245,940/x
3. Step 3: Cross multiply
   155,064x = 245,940 × 245,940
4. Step 4: Simplify right side
   155,064x = 60,486,483,600
5. Step 5: Solve for x
   x = 60,486,483,600/155,064
6. Step 6: Final answer
   x = 390,074.32