Finding the Third Proportional to 276,619.50 and 563,391

Step by Step Solution

1. Step 1: Write the proportion equation
   276,619.50 : 563,391 = 563,391 : x
2. Step 2: Convert to fraction form
   276,619.50/563,391 = 563,391/x
3. Step 3: Cross multiply
   276,619.50x = 563,391 × 563,391
4. Step 4: Simplify right side
   276,619.50x = 317,409,418,881
5. Step 5: Solve for x
   x = 317,409,418,881/276,619.50
6. Step 6: Final answer
   x = 1,147,458.58