Finding the Third Proportional to 278,154 and 569,531.25

Step by Step Solution

1. Step 1: Write the proportion equation
   278,154 : 569,531.25 = 569,531.25 : x
2. Step 2: Convert to fraction form
   278,154/569,531.25 = 569,531.25/x
3. Step 3: Cross multiply
   278,154x = 569,531.25 × 569,531.25
4. Step 4: Simplify right side
   278,154x = 324,365,844,726.56
5. Step 5: Solve for x
   x = 324,365,844,726.56/278,154
6. Step 6: Final answer
   x = 1,166,137.62