Finding the Third Proportional to 42,553 and 91,423

Step by Step Solution

1. Step 1: Write the proportion equation
   42,553 : 91,423 = 91,423 : x
2. Step 2: Convert to fraction form
   42,553/91,423 = 91,423/x
3. Step 3: Cross multiply
   42,553x = 91,423 × 91,423
4. Step 4: Simplify right side
   42,553x = 8,358,164,929
5. Step 5: Solve for x
   x = 8,358,164,929/42,553
6. Step 6: Final answer
   x = 196,417.76