Finding the Third Proportional to 19,389 and 42,787.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,389 : 42,787.50 = 42,787.50 : x
2. Step 2: Convert to fraction form
   19,389/42,787.50 = 42,787.50/x
3. Step 3: Cross multiply
   19,389x = 42,787.50 × 42,787.50
4. Step 4: Simplify right side
   19,389x = 1,830,770,156.25
5. Step 5: Solve for x
   x = 1,830,770,156.25/19,389
6. Step 6: Final answer
   x = 94,423.13