Finding the Third Proportional to 346,028.50 and 743,789

Step by Step Solution

1. Step 1: Write the proportion equation
   346,028.50 : 743,789 = 743,789 : x
2. Step 2: Convert to fraction form
   346,028.50/743,789 = 743,789/x
3. Step 3: Cross multiply
   346,028.50x = 743,789 × 743,789
4. Step 4: Simplify right side
   346,028.50x = 553,222,076,521
5. Step 5: Solve for x
   x = 553,222,076,521/346,028.50
6. Step 6: Final answer
   x = 1,598,776.04