Finding the Third Proportional to 493,238.25 and 668,412

Step by Step Solution

1. Step 1: Write the proportion equation
   493,238.25 : 668,412 = 668,412 : x
2. Step 2: Convert to fraction form
   493,238.25/668,412 = 668,412/x
3. Step 3: Cross multiply
   493,238.25x = 668,412 × 668,412
4. Step 4: Simplify right side
   493,238.25x = 446,774,601,744
5. Step 5: Solve for x
   x = 446,774,601,744/493,238.25
6. Step 6: Final answer
   x = 905,798.77