Finding the Third Proportional to 1,217.69 and 1,897.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,217.69 : 1,897.80 = 1,897.80 : x
2. Step 2: Convert to fraction form
   1,217.69/1,897.80 = 1,897.80/x
3. Step 3: Cross multiply
   1,217.69x = 1,897.80 × 1,897.80
4. Step 4: Simplify right side
   1,217.69x = 3,601,662.63
5. Step 5: Solve for x
   x = 3,601,662.63/1,217.69
6. Step 6: Final answer
   x = 2,957.78