Finding the Third Proportional to 19,557 and 42,151.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,557 : 42,151.50 = 42,151.50 : x
2. Step 2: Convert to fraction form
   19,557/42,151.50 = 42,151.50/x
3. Step 3: Cross multiply
   19,557x = 42,151.50 × 42,151.50
4. Step 4: Simplify right side
   19,557x = 1,776,748,952.25
5. Step 5: Solve for x
   x = 1,776,748,952.25/19,557
6. Step 6: Final answer
   x = 90,849.77