Finding the Third Proportional to 336,870 and 727,710.75

Step by Step Solution

1. Step 1: Write the proportion equation
   336,870 : 727,710.75 = 727,710.75 : x
2. Step 2: Convert to fraction form
   336,870/727,710.75 = 727,710.75/x
3. Step 3: Cross multiply
   336,870x = 727,710.75 × 727,710.75
4. Step 4: Simplify right side
   336,870x = 529,562,935,665.56
5. Step 5: Solve for x
   x = 529,562,935,665.56/336,870
6. Step 6: Final answer
   x = 1,572,009.78