Finding the Third Proportional to 245,931 and 580,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,931 : 580,321.50 = 580,321.50 : x
2. Step 2: Convert to fraction form
   245,931/580,321.50 = 580,321.50/x
3. Step 3: Cross multiply
   245,931x = 580,321.50 × 580,321.50
4. Step 4: Simplify right side
   245,931x = 336,773,043,362.25
5. Step 5: Solve for x
   x = 336,773,043,362.25/245,931
6. Step 6: Final answer
   x = 1,369,380.21