Finding the Third Proportional to 250,658 and 521,970.50

Step by Step Solution

1. Step 1: Write the proportion equation
   250,658 : 521,970.50 = 521,970.50 : x
2. Step 2: Convert to fraction form
   250,658/521,970.50 = 521,970.50/x
3. Step 3: Cross multiply
   250,658x = 521,970.50 × 521,970.50
4. Step 4: Simplify right side
   250,658x = 272,453,202,870.25
5. Step 5: Solve for x
   x = 272,453,202,870.25/250,658
6. Step 6: Final answer
   x = 1,086,951.95