Finding the Third Proportional to 439,251 and 890,725.50

Step by Step Solution

1. Step 1: Write the proportion equation
   439,251 : 890,725.50 = 890,725.50 : x
2. Step 2: Convert to fraction form
   439,251/890,725.50 = 890,725.50/x
3. Step 3: Cross multiply
   439,251x = 890,725.50 × 890,725.50
4. Step 4: Simplify right side
   439,251x = 793,391,916,350.25
5. Step 5: Solve for x
   x = 793,391,916,350.25/439,251
6. Step 6: Final answer
   x = 1,806,238.16