Finding the Third Proportional to 64,557 and 139,834.13

Step by Step Solution

1. Step 1: Write the proportion equation
   64,557 : 139,834.13 = 139,834.13 : x
2. Step 2: Convert to fraction form
   64,557/139,834.13 = 139,834.13/x
3. Step 3: Cross multiply
   64,557x = 139,834.13 × 139,834.13
4. Step 4: Simplify right side
   64,557x = 19,553,582,514.52
5. Step 5: Solve for x
   x = 19,553,582,514.52/64,557
6. Step 6: Final answer
   x = 302,888.65