Finding the Third Proportional to 1,931.63 and 4,136.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.63 : 4,136.55 = 4,136.55 : x
2. Step 2: Convert to fraction form
   1,931.63/4,136.55 = 4,136.55/x
3. Step 3: Cross multiply
   1,931.63x = 4,136.55 × 4,136.55
4. Step 4: Simplify right side
   1,931.63x = 17,111,084.68
5. Step 5: Solve for x
   x = 17,111,084.68/1,931.63
6. Step 6: Final answer
   x = 8,858.39