Finding the Third Proportional to 19,499 and 42,239

Step by Step Solution

1. Step 1: Write the proportion equation
   19,499 : 42,239 = 42,239 : x
2. Step 2: Convert to fraction form
   19,499/42,239 = 42,239/x
3. Step 3: Cross multiply
   19,499x = 42,239 × 42,239
4. Step 4: Simplify right side
   19,499x = 1,784,133,121
5. Step 5: Solve for x
   x = 1,784,133,121/19,499
6. Step 6: Final answer
   x = 91,498.70