Finding the Third Proportional to 52,640 and 72,368

Step by Step Solution

1. Step 1: Write the proportion equation
   52,640 : 72,368 = 72,368 : x
2. Step 2: Convert to fraction form
   52,640/72,368 = 72,368/x
3. Step 3: Cross multiply
   52,640x = 72,368 × 72,368
4. Step 4: Simplify right side
   52,640x = 5,237,127,424
5. Step 5: Solve for x
   x = 5,237,127,424/52,640
6. Step 6: Final answer
   x = 99,489.50