Finding the Third Proportional to 328,054 and 535,678.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,054 : 535,678.50 = 535,678.50 : x
2. Step 2: Convert to fraction form
   328,054/535,678.50 = 535,678.50/x
3. Step 3: Cross multiply
   328,054x = 535,678.50 × 535,678.50
4. Step 4: Simplify right side
   328,054x = 286,951,455,362.25
5. Step 5: Solve for x
   x = 286,951,455,362.25/328,054
6. Step 6: Final answer
   x = 874,707.99