Finding the Third Proportional to 278,010 and 610,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   278,010 : 610,147.50 = 610,147.50 : x
2. Step 2: Convert to fraction form
   278,010/610,147.50 = 610,147.50/x
3. Step 3: Cross multiply
   278,010x = 610,147.50 × 610,147.50
4. Step 4: Simplify right side
   278,010x = 372,279,971,756.25
5. Step 5: Solve for x
   x = 372,279,971,756.25/278,010
6. Step 6: Final answer
   x = 1,339,088.42