Finding the Third Proportional to 333,697.50 and 719,887.50

Step by Step Solution

1. Step 1: Write the proportion equation
   333,697.50 : 719,887.50 = 719,887.50 : x
2. Step 2: Convert to fraction form
   333,697.50/719,887.50 = 719,887.50/x
3. Step 3: Cross multiply
   333,697.50x = 719,887.50 × 719,887.50
4. Step 4: Simplify right side
   333,697.50x = 518,238,012,656.25
5. Step 5: Solve for x
   x = 518,238,012,656.25/333,697.50
6. Step 6: Final answer
   x = 1,553,017.37