Finding the Third Proportional to 278,142.50 and 571,030.25

Step by Step Solution

1. Step 1: Write the proportion equation
   278,142.50 : 571,030.25 = 571,030.25 : x
2. Step 2: Convert to fraction form
   278,142.50/571,030.25 = 571,030.25/x
3. Step 3: Cross multiply
   278,142.50x = 571,030.25 × 571,030.25
4. Step 4: Simplify right side
   278,142.50x = 326,075,546,415.06
5. Step 5: Solve for x
   x = 326,075,546,415.06/278,142.50
6. Step 6: Final answer
   x = 1,172,332.69