Finding the Third Proportional to 139,573 and 199,354

Step by Step Solution

1. Step 1: Write the proportion equation
   139,573 : 199,354 = 199,354 : x
2. Step 2: Convert to fraction form
   139,573/199,354 = 199,354/x
3. Step 3: Cross multiply
   139,573x = 199,354 × 199,354
4. Step 4: Simplify right side
   139,573x = 39,742,017,316
5. Step 5: Solve for x
   x = 39,742,017,316/139,573
6. Step 6: Final answer
   x = 284,740.01