Finding the Third Proportional to 343,415.25 and 745,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,415.25 : 745,945.50 = 745,945.50 : x
2. Step 2: Convert to fraction form
   343,415.25/745,945.50 = 745,945.50/x
3. Step 3: Cross multiply
   343,415.25x = 745,945.50 × 745,945.50
4. Step 4: Simplify right side
   343,415.25x = 556,434,688,970.25
5. Step 5: Solve for x
   x = 556,434,688,970.25/343,415.25
6. Step 6: Final answer
   x = 1,620,296.97