Finding the Third Proportional to 426,011.50 and 918,453

Step by Step Solution

1. Step 1: Write the proportion equation
   426,011.50 : 918,453 = 918,453 : x
2. Step 2: Convert to fraction form
   426,011.50/918,453 = 918,453/x
3. Step 3: Cross multiply
   426,011.50x = 918,453 × 918,453
4. Step 4: Simplify right side
   426,011.50x = 843,555,913,209
5. Step 5: Solve for x
   x = 843,555,913,209/426,011.50
6. Step 6: Final answer
   x = 1,980,124.75