Finding the Third Proportional to 426,654 and 921,726

Step by Step Solution

1. Step 1: Write the proportion equation
   426,654 : 921,726 = 921,726 : x
2. Step 2: Convert to fraction form
   426,654/921,726 = 921,726/x
3. Step 3: Cross multiply
   426,654x = 921,726 × 921,726
4. Step 4: Simplify right side
   426,654x = 849,578,819,076
5. Step 5: Solve for x
   x = 849,578,819,076/426,654
6. Step 6: Final answer
   x = 1,991,259.47