Finding the Third Proportional to 286,488 and 607,125.75

Step by Step Solution

1. Step 1: Write the proportion equation
   286,488 : 607,125.75 = 607,125.75 : x
2. Step 2: Convert to fraction form
   286,488/607,125.75 = 607,125.75/x
3. Step 3: Cross multiply
   286,488x = 607,125.75 × 607,125.75
4. Step 4: Simplify right side
   286,488x = 368,601,676,313.06
5. Step 5: Solve for x
   x = 368,601,676,313.06/286,488
6. Step 6: Final answer
   x = 1,286,621.70