Finding the Third Proportional to 426,036.38 and 918,499.50

Step by Step Solution

1. Step 1: Write the proportion equation
   426,036.38 : 918,499.50 = 918,499.50 : x
2. Step 2: Convert to fraction form
   426,036.38/918,499.50 = 918,499.50/x
3. Step 3: Cross multiply
   426,036.38x = 918,499.50 × 918,499.50
4. Step 4: Simplify right side
   426,036.38x = 843,641,331,500.25
5. Step 5: Solve for x
   x = 843,641,331,500.25/426,036.38
6. Step 6: Final answer
   x = 1,980,209.63