Finding the Third Proportional to 864,442 and 1,308,597

Step by Step Solution

1. Step 1: Write the proportion equation
   864,442 : 1,308,597 = 1,308,597 : x
2. Step 2: Convert to fraction form
   864,442/1,308,597 = 1,308,597/x
3. Step 3: Cross multiply
   864,442x = 1,308,597 × 1,308,597
4. Step 4: Simplify right side
   864,442x = 1,712,426,108,409
5. Step 5: Solve for x
   x = 1,712,426,108,409/864,442
6. Step 6: Final answer
   x = 1,980,961.25