Finding the Third Proportional to 665,448 and 931,308

Step by Step Solution

1. Step 1: Write the proportion equation
   665,448 : 931,308 = 931,308 : x
2. Step 2: Convert to fraction form
   665,448/931,308 = 931,308/x
3. Step 3: Cross multiply
   665,448x = 931,308 × 931,308
4. Step 4: Simplify right side
   665,448x = 867,334,590,864
5. Step 5: Solve for x
   x = 867,334,590,864/665,448
6. Step 6: Final answer
   x = 1,303,384.47