Finding the Third Proportional to 12,506.91 and 19,996.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,506.91 : 19,996.88 = 19,996.88 : x
2. Step 2: Convert to fraction form
   12,506.91/19,996.88 = 19,996.88/x
3. Step 3: Cross multiply
   12,506.91x = 19,996.88 × 19,996.88
4. Step 4: Simplify right side
   12,506.91x = 399,875,009.77
5. Step 5: Solve for x
   x = 399,875,009.77/12,506.91
6. Step 6: Final answer
   x = 31,972.34