Finding the Third Proportional to 742,300.50 and 1,120,363.50

Step by Step Solution

1. Step 1: Write the proportion equation
   742,300.50 : 1,120,363.50 = 1,120,363.50 : x
2. Step 2: Convert to fraction form
   742,300.50/1,120,363.50 = 1,120,363.50/x
3. Step 3: Cross multiply
   742,300.50x = 1,120,363.50 × 1,120,363.50
4. Step 4: Simplify right side
   742,300.50x = 1,255,214,372,132.25
5. Step 5: Solve for x
   x = 1,255,214,372,132.25/742,300.50
6. Step 6: Final answer
   x = 1,690,978.75