Finding the Third Proportional to 64,536.19 and 139,795.88

Step by Step Solution

1. Step 1: Write the proportion equation
   64,536.19 : 139,795.88 = 139,795.88 : x
2. Step 2: Convert to fraction form
   64,536.19/139,795.88 = 139,795.88/x
3. Step 3: Cross multiply
   64,536.19x = 139,795.88 × 139,795.88
4. Step 4: Simplify right side
   64,536.19x = 19,542,886,667.02
5. Step 5: Solve for x
   x = 19,542,886,667.02/64,536.19
6. Step 6: Final answer
   x = 302,820.59