Finding the Third Proportional to 1,215.95 and 2,663.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215.95 : 2,663.98 = 2,663.98 : x
2. Step 2: Convert to fraction form
   1,215.95/2,663.98 = 2,663.98/x
3. Step 3: Cross multiply
   1,215.95x = 2,663.98 × 2,663.98
4. Step 4: Simplify right side
   1,215.95x = 7,096,802.34
5. Step 5: Solve for x
   x = 7,096,802.34/1,215.95
6. Step 6: Final answer
   x = 5,836.43