Finding the Third Proportional to 42,859 and 64,248

Step by Step Solution

1. Step 1: Write the proportion equation
   42,859 : 64,248 = 64,248 : x
2. Step 2: Convert to fraction form
   42,859/64,248 = 64,248/x
3. Step 3: Cross multiply
   42,859x = 64,248 × 64,248
4. Step 4: Simplify right side
   42,859x = 4,127,805,504
5. Step 5: Solve for x
   x = 4,127,805,504/42,859
6. Step 6: Final answer
   x = 96,311.29