Finding the Third Proportional to 343,404.56 and 745,903.69

Step by Step Solution

1. Step 1: Write the proportion equation
   343,404.56 : 745,903.69 = 745,903.69 : x
2. Step 2: Convert to fraction form
   343,404.56/745,903.69 = 745,903.69/x
3. Step 3: Cross multiply
   343,404.56x = 745,903.69 × 745,903.69
4. Step 4: Simplify right side
   343,404.56x = 556,372,311,026.10
5. Step 5: Solve for x
   x = 556,372,311,026.10/343,404.56
6. Step 6: Final answer
   x = 1,620,165.75