Finding the Third Proportional to 12,558.75 and 17,056.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,558.75 : 17,056.50 = 17,056.50 : x
2. Step 2: Convert to fraction form
   12,558.75/17,056.50 = 17,056.50/x
3. Step 3: Cross multiply
   12,558.75x = 17,056.50 × 17,056.50
4. Step 4: Simplify right side
   12,558.75x = 290,924,192.25
5. Step 5: Solve for x
   x = 290,924,192.25/12,558.75
6. Step 6: Final answer
   x = 23,165.06