Finding the Third Proportional to 278,008.50 and 610,146

Step by Step Solution

1. Step 1: Write the proportion equation
   278,008.50 : 610,146 = 610,146 : x
2. Step 2: Convert to fraction form
   278,008.50/610,146 = 610,146/x
3. Step 3: Cross multiply
   278,008.50x = 610,146 × 610,146
4. Step 4: Simplify right side
   278,008.50x = 372,278,141,316
5. Step 5: Solve for x
   x = 372,278,141,316/278,008.50
6. Step 6: Final answer
   x = 1,339,089.06