Finding the Third Proportional to 333,389.25 and 720,090

Step by Step Solution

1. Step 1: Write the proportion equation
   333,389.25 : 720,090 = 720,090 : x
2. Step 2: Convert to fraction form
   333,389.25/720,090 = 720,090/x
3. Step 3: Cross multiply
   333,389.25x = 720,090 × 720,090
4. Step 4: Simplify right side
   333,389.25x = 518,529,608,100
5. Step 5: Solve for x
   x = 518,529,608,100/333,389.25
6. Step 6: Final answer
   x = 1,555,327.92