Finding the Third Proportional to 13,507.80 and 21,703.36

Step by Step Solution

1. Step 1: Write the proportion equation
   13,507.80 : 21,703.36 = 21,703.36 : x
2. Step 2: Convert to fraction form
   13,507.80/21,703.36 = 21,703.36/x
3. Step 3: Cross multiply
   13,507.80x = 21,703.36 × 21,703.36
4. Step 4: Simplify right side
   13,507.80x = 471,035,808.16
5. Step 5: Solve for x
   x = 471,035,808.16/13,507.80
6. Step 6: Final answer
   x = 34,871.38