Finding the Third Proportional to 19,870.95 and 42,788.88

Step by Step Solution

1. Step 1: Write the proportion equation
   19,870.95 : 42,788.88 = 42,788.88 : x
2. Step 2: Convert to fraction form
   19,870.95/42,788.88 = 42,788.88/x
3. Step 3: Cross multiply
   19,870.95x = 42,788.88 × 42,788.88
4. Step 4: Simplify right side
   19,870.95x = 1,830,888,492.34
5. Step 5: Solve for x
   x = 1,830,888,492.34/19,870.95
6. Step 6: Final answer
   x = 92,138.97