Finding the Third Proportional to 291,538 and 607,940

Step by Step Solution

1. Step 1: Write the proportion equation
   291,538 : 607,940 = 607,940 : x
2. Step 2: Convert to fraction form
   291,538/607,940 = 607,940/x
3. Step 3: Cross multiply
   291,538x = 607,940 × 607,940
4. Step 4: Simplify right side
   291,538x = 369,591,043,600
5. Step 5: Solve for x
   x = 369,591,043,600/291,538
6. Step 6: Final answer
   x = 1,267,728.54