Finding the Third Proportional to 19,422.31 and 42,928.02

Step by Step Solution

1. Step 1: Write the proportion equation
   19,422.31 : 42,928.02 = 42,928.02 : x
2. Step 2: Convert to fraction form
   19,422.31/42,928.02 = 42,928.02/x
3. Step 3: Cross multiply
   19,422.31x = 42,928.02 × 42,928.02
4. Step 4: Simplify right side
   19,422.31x = 1,842,814,687.95
5. Step 5: Solve for x
   x = 1,842,814,687.95/19,422.31
6. Step 6: Final answer
   x = 94,881.35