Finding the Third Proportional to 193,181.50 and 407,339

Step by Step Solution

1. Step 1: Write the proportion equation
   193,181.50 : 407,339 = 407,339 : x
2. Step 2: Convert to fraction form
   193,181.50/407,339 = 407,339/x
3. Step 3: Cross multiply
   193,181.50x = 407,339 × 407,339
4. Step 4: Simplify right side
   193,181.50x = 165,925,060,921
5. Step 5: Solve for x
   x = 165,925,060,921/193,181.50
6. Step 6: Final answer
   x = 858,907.61