Finding the Third Proportional to 491,688 and 742,027.50

Step by Step Solution

1. Step 1: Write the proportion equation
   491,688 : 742,027.50 = 742,027.50 : x
2. Step 2: Convert to fraction form
   491,688/742,027.50 = 742,027.50/x
3. Step 3: Cross multiply
   491,688x = 742,027.50 × 742,027.50
4. Step 4: Simplify right side
   491,688x = 550,604,810,756.25
5. Step 5: Solve for x
   x = 550,604,810,756.25/491,688
6. Step 6: Final answer
   x = 1,119,825.60