Finding the Third Proportional to 8,139,697.50 and 12,956,772

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,697.50 : 12,956,772 = 12,956,772 : x
2. Step 2: Convert to fraction form
   8,139,697.50/12,956,772 = 12,956,772/x
3. Step 3: Cross multiply
   8,139,697.50x = 12,956,772 × 12,956,772
4. Step 4: Simplify right side
   8,139,697.50x = 167,877,940,659,984
5. Step 5: Solve for x
   x = 167,877,940,659,984/8,139,697.50
6. Step 6: Final answer
   x = 20,624,592.09