Finding the Third Proportional to 916,128 and 1,967,688

Step by Step Solution

1. Step 1: Write the proportion equation
   916,128 : 1,967,688 = 1,967,688 : x
2. Step 2: Convert to fraction form
   916,128/1,967,688 = 1,967,688/x
3. Step 3: Cross multiply
   916,128x = 1,967,688 × 1,967,688
4. Step 4: Simplify right side
   916,128x = 3,871,796,065,344
5. Step 5: Solve for x
   x = 3,871,796,065,344/916,128
6. Step 6: Final answer
   x = 4,226,261.03