Finding the Third Proportional to 19,570 and 42,331

Step by Step Solution

1. Step 1: Write the proportion equation
   19,570 : 42,331 = 42,331 : x
2. Step 2: Convert to fraction form
   19,570/42,331 = 42,331/x
3. Step 3: Cross multiply
   19,570x = 42,331 × 42,331
4. Step 4: Simplify right side
   19,570x = 1,791,913,561
5. Step 5: Solve for x
   x = 1,791,913,561/19,570
6. Step 6: Final answer
   x = 91,564.31