Finding the Third Proportional to 721,056 and 1,669,200

Step by Step Solution

1. Step 1: Write the proportion equation
   721,056 : 1,669,200 = 1,669,200 : x
2. Step 2: Convert to fraction form
   721,056/1,669,200 = 1,669,200/x
3. Step 3: Cross multiply
   721,056x = 1,669,200 × 1,669,200
4. Step 4: Simplify right side
   721,056x = 2,786,228,640,000
5. Step 5: Solve for x
   x = 2,786,228,640,000/721,056
6. Step 6: Final answer
   x = 3,864,094.66