Finding the Third Proportional to 153,900 and 236,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,900 : 236,398.50 = 236,398.50 : x
2. Step 2: Convert to fraction form
   153,900/236,398.50 = 236,398.50/x
3. Step 3: Cross multiply
   153,900x = 236,398.50 × 236,398.50
4. Step 4: Simplify right side
   153,900x = 55,884,250,802.25
5. Step 5: Solve for x
   x = 55,884,250,802.25/153,900
6. Step 6: Final answer
   x = 363,120.54