Finding the Third Proportional to 917,296 and 1,389,784

Step by Step Solution

1. Step 1: Write the proportion equation
   917,296 : 1,389,784 = 1,389,784 : x
2. Step 2: Convert to fraction form
   917,296/1,389,784 = 1,389,784/x
3. Step 3: Cross multiply
   917,296x = 1,389,784 × 1,389,784
4. Step 4: Simplify right side
   917,296x = 1,931,499,566,656
5. Step 5: Solve for x
   x = 1,931,499,566,656/917,296
6. Step 6: Final answer
   x = 2,105,644.82