Finding the Third Proportional to 278,575.50 and 601,485

Step by Step Solution

1. Step 1: Write the proportion equation
   278,575.50 : 601,485 = 601,485 : x
2. Step 2: Convert to fraction form
   278,575.50/601,485 = 601,485/x
3. Step 3: Cross multiply
   278,575.50x = 601,485 × 601,485
4. Step 4: Simplify right side
   278,575.50x = 361,784,205,225
5. Step 5: Solve for x
   x = 361,784,205,225/278,575.50
6. Step 6: Final answer
   x = 1,298,693.55