Finding the Third Proportional to 425,538 and 918,322.50

Step by Step Solution

1. Step 1: Write the proportion equation
   425,538 : 918,322.50 = 918,322.50 : x
2. Step 2: Convert to fraction form
   425,538/918,322.50 = 918,322.50/x
3. Step 3: Cross multiply
   425,538x = 918,322.50 × 918,322.50
4. Step 4: Simplify right side
   425,538x = 843,316,214,006.25
5. Step 5: Solve for x
   x = 843,316,214,006.25/425,538
6. Step 6: Final answer
   x = 1,981,764.76