Finding the Third Proportional to 78,859 and 113,354.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,859 : 113,354.50 = 113,354.50 : x
2. Step 2: Convert to fraction form
   78,859/113,354.50 = 113,354.50/x
3. Step 3: Cross multiply
   78,859x = 113,354.50 × 113,354.50
4. Step 4: Simplify right side
   78,859x = 12,849,242,670.25
5. Step 5: Solve for x
   x = 12,849,242,670.25/78,859
6. Step 6: Final answer
   x = 162,939.46