Finding the Third Proportional to 350,676 and 761,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   350,676 : 761,128.50 = 761,128.50 : x
2. Step 2: Convert to fraction form
   350,676/761,128.50 = 761,128.50/x
3. Step 3: Cross multiply
   350,676x = 761,128.50 × 761,128.50
4. Step 4: Simplify right side
   350,676x = 579,316,593,512.25
5. Step 5: Solve for x
   x = 579,316,593,512.25/350,676
6. Step 6: Final answer
   x = 1,651,999.55