Finding the Third Proportional to 286,500 and 607,150

Step by Step Solution

1. Step 1: Write the proportion equation
   286,500 : 607,150 = 607,150 : x
2. Step 2: Convert to fraction form
   286,500/607,150 = 607,150/x
3. Step 3: Cross multiply
   286,500x = 607,150 × 607,150
4. Step 4: Simplify right side
   286,500x = 368,631,122,500
5. Step 5: Solve for x
   x = 368,631,122,500/286,500
6. Step 6: Final answer
   x = 1,286,670.58