Finding the Third Proportional to 27,870 and 42,453

Step by Step Solution

1. Step 1: Write the proportion equation
   27,870 : 42,453 = 42,453 : x
2. Step 2: Convert to fraction form
   27,870/42,453 = 42,453/x
3. Step 3: Cross multiply
   27,870x = 42,453 × 42,453
4. Step 4: Simplify right side
   27,870x = 1,802,257,209
5. Step 5: Solve for x
   x = 1,802,257,209/27,870
6. Step 6: Final answer
   x = 64,666.57