Finding the Third Proportional to 13,907.95 and 21,015.70

Step by Step Solution

1. Step 1: Write the proportion equation
   13,907.95 : 21,015.70 = 21,015.70 : x
2. Step 2: Convert to fraction form
   13,907.95/21,015.70 = 21,015.70/x
3. Step 3: Cross multiply
   13,907.95x = 21,015.70 × 21,015.70
4. Step 4: Simplify right side
   13,907.95x = 441,659,777.84
5. Step 5: Solve for x
   x = 441,659,777.84/13,907.95
6. Step 6: Final answer
   x = 31,755.92