Finding the Third Proportional to 247,990.50 and 528,426

Step by Step Solution

1. Step 1: Write the proportion equation
   247,990.50 : 528,426 = 528,426 : x
2. Step 2: Convert to fraction form
   247,990.50/528,426 = 528,426/x
3. Step 3: Cross multiply
   247,990.50x = 528,426 × 528,426
4. Step 4: Simplify right side
   247,990.50x = 279,234,037,476
5. Step 5: Solve for x
   x = 279,234,037,476/247,990.50
6. Step 6: Final answer
   x = 1,125,986.83