Finding the Third Proportional to 397,116 and 607,599.56

Step by Step Solution

1. Step 1: Write the proportion equation
   397,116 : 607,599.56 = 607,599.56 : x
2. Step 2: Convert to fraction form
   397,116/607,599.56 = 607,599.56/x
3. Step 3: Cross multiply
   397,116x = 607,599.56 × 607,599.56
4. Step 4: Simplify right side
   397,116x = 369,177,228,350.19
5. Step 5: Solve for x
   x = 369,177,228,350.19/397,116
6. Step 6: Final answer
   x = 929,645.82