Finding the Third Proportional to 286,938 and 670,180.50

Step by Step Solution

1. Step 1: Write the proportion equation
   286,938 : 670,180.50 = 670,180.50 : x
2. Step 2: Convert to fraction form
   286,938/670,180.50 = 670,180.50/x
3. Step 3: Cross multiply
   286,938x = 670,180.50 × 670,180.50
4. Step 4: Simplify right side
   286,938x = 449,141,902,580.25
5. Step 5: Solve for x
   x = 449,141,902,580.25/286,938
6. Step 6: Final answer
   x = 1,565,292.51