Finding the Third Proportional to 19,430 and 42,506

Step by Step Solution

1. Step 1: Write the proportion equation
   19,430 : 42,506 = 42,506 : x
2. Step 2: Convert to fraction form
   19,430/42,506 = 42,506/x
3. Step 3: Cross multiply
   19,430x = 42,506 × 42,506
4. Step 4: Simplify right side
   19,430x = 1,806,760,036
5. Step 5: Solve for x
   x = 1,806,760,036/19,430
6. Step 6: Final answer
   x = 92,988.16