Finding the Third Proportional to 247,321.50 and 370,818

Step by Step Solution

1. Step 1: Write the proportion equation
   247,321.50 : 370,818 = 370,818 : x
2. Step 2: Convert to fraction form
   247,321.50/370,818 = 370,818/x
3. Step 3: Cross multiply
   247,321.50x = 370,818 × 370,818
4. Step 4: Simplify right side
   247,321.50x = 137,505,989,124
5. Step 5: Solve for x
   x = 137,505,989,124/247,321.50
6. Step 6: Final answer
   x = 555,980.73