Finding the Third Proportional to 921,560 and 1,916,670

Step by Step Solution

1. Step 1: Write the proportion equation
   921,560 : 1,916,670 = 1,916,670 : x
2. Step 2: Convert to fraction form
   921,560/1,916,670 = 1,916,670/x
3. Step 3: Cross multiply
   921,560x = 1,916,670 × 1,916,670
4. Step 4: Simplify right side
   921,560x = 3,673,623,888,900
5. Step 5: Solve for x
   x = 3,673,623,888,900/921,560
6. Step 6: Final answer
   x = 3,986,310.05