Finding the Third Proportional to 616,903 and 840,425.50

Step by Step Solution

1. Step 1: Write the proportion equation
   616,903 : 840,425.50 = 840,425.50 : x
2. Step 2: Convert to fraction form
   616,903/840,425.50 = 840,425.50/x
3. Step 3: Cross multiply
   616,903x = 840,425.50 × 840,425.50
4. Step 4: Simplify right side
   616,903x = 706,315,021,050.25
5. Step 5: Solve for x
   x = 706,315,021,050.25/616,903
6. Step 6: Final answer
   x = 1,144,936.92