Finding the Third Proportional to 553,219.50 and 841,308

Step by Step Solution

1. Step 1: Write the proportion equation
   553,219.50 : 841,308 = 841,308 : x
2. Step 2: Convert to fraction form
   553,219.50/841,308 = 841,308/x
3. Step 3: Cross multiply
   553,219.50x = 841,308 × 841,308
4. Step 4: Simplify right side
   553,219.50x = 707,799,150,864
5. Step 5: Solve for x
   x = 707,799,150,864/553,219.50
6. Step 6: Final answer
   x = 1,279,418.30