Finding the Third Proportional to 345,306.80 and 749,662.59

Step by Step Solution

1. Step 1: Write the proportion equation
   345,306.80 : 749,662.59 = 749,662.59 : x
2. Step 2: Convert to fraction form
   345,306.80/749,662.59 = 749,662.59/x
3. Step 3: Cross multiply
   345,306.80x = 749,662.59 × 749,662.59
4. Step 4: Simplify right side
   345,306.80x = 561,994,004,467.98
5. Step 5: Solve for x
   x = 561,994,004,467.98/345,306.80
6. Step 6: Final answer
   x = 1,627,520.83