Finding the Third Proportional to 354,528 and 758,890

Step by Step Solution

1. Step 1: Write the proportion equation
   354,528 : 758,890 = 758,890 : x
2. Step 2: Convert to fraction form
   354,528/758,890 = 758,890/x
3. Step 3: Cross multiply
   354,528x = 758,890 × 758,890
4. Step 4: Simplify right side
   354,528x = 575,914,032,100
5. Step 5: Solve for x
   x = 575,914,032,100/354,528
6. Step 6: Final answer
   x = 1,624,452.88