Finding the Third Proportional to 761,216 and 1,639,360

Step by Step Solution

1. Step 1: Write the proportion equation
   761,216 : 1,639,360 = 1,639,360 : x
2. Step 2: Convert to fraction form
   761,216/1,639,360 = 1,639,360/x
3. Step 3: Cross multiply
   761,216x = 1,639,360 × 1,639,360
4. Step 4: Simplify right side
   761,216x = 2,687,501,209,600
5. Step 5: Solve for x
   x = 2,687,501,209,600/761,216
6. Step 6: Final answer
   x = 3,530,536.94