Finding the Third Proportional to 42,207 and 64,382

Step by Step Solution

1. Step 1: Write the proportion equation
   42,207 : 64,382 = 64,382 : x
2. Step 2: Convert to fraction form
   42,207/64,382 = 64,382/x
3. Step 3: Cross multiply
   42,207x = 64,382 × 64,382
4. Step 4: Simplify right side
   42,207x = 4,145,041,924
5. Step 5: Solve for x
   x = 4,145,041,924/42,207
6. Step 6: Final answer
   x = 98,207.45