Finding the Third Proportional to 721,060 and 1,669,210

Step by Step Solution

1. Step 1: Write the proportion equation
   721,060 : 1,669,210 = 1,669,210 : x
2. Step 2: Convert to fraction form
   721,060/1,669,210 = 1,669,210/x
3. Step 3: Cross multiply
   721,060x = 1,669,210 × 1,669,210
4. Step 4: Simplify right side
   721,060x = 2,786,262,024,100
5. Step 5: Solve for x
   x = 2,786,262,024,100/721,060
6. Step 6: Final answer
   x = 3,864,119.52