Finding the Third Proportional to 12,970.50 and 26,415.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,970.50 : 26,415.75 = 26,415.75 : x
2. Step 2: Convert to fraction form
   12,970.50/26,415.75 = 26,415.75/x
3. Step 3: Cross multiply
   12,970.50x = 26,415.75 × 26,415.75
4. Step 4: Simplify right side
   12,970.50x = 697,791,848.06
5. Step 5: Solve for x
   x = 697,791,848.06/12,970.50
6. Step 6: Final answer
   x = 53,798.38