Finding the Third Proportional to 128,431.50 and 184,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,431.50 : 184,384.50 = 184,384.50 : x
2. Step 2: Convert to fraction form
   128,431.50/184,384.50 = 184,384.50/x
3. Step 3: Cross multiply
   128,431.50x = 184,384.50 × 184,384.50
4. Step 4: Simplify right side
   128,431.50x = 33,997,643,840.25
5. Step 5: Solve for x
   x = 33,997,643,840.25/128,431.50
6. Step 6: Final answer
   x = 264,714.22