Finding the Third Proportional to 321,432 and 761,510

Step by Step Solution

1. Step 1: Write the proportion equation
   321,432 : 761,510 = 761,510 : x
2. Step 2: Convert to fraction form
   321,432/761,510 = 761,510/x
3. Step 3: Cross multiply
   321,432x = 761,510 × 761,510
4. Step 4: Simplify right side
   321,432x = 579,897,480,100
5. Step 5: Solve for x
   x = 579,897,480,100/321,432
6. Step 6: Final answer
   x = 1,804,106.25