Finding the Third Proportional to 42,372 and 90,222

Step by Step Solution

1. Step 1: Write the proportion equation
   42,372 : 90,222 = 90,222 : x
2. Step 2: Convert to fraction form
   42,372/90,222 = 90,222/x
3. Step 3: Cross multiply
   42,372x = 90,222 × 90,222
4. Step 4: Simplify right side
   42,372x = 8,140,009,284
5. Step 5: Solve for x
   x = 8,140,009,284/42,372
6. Step 6: Final answer
   x = 192,108.21