Finding the Third Proportional to 139,572 and 199,354.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,572 : 199,354.50 = 199,354.50 : x
2. Step 2: Convert to fraction form
   139,572/199,354.50 = 199,354.50/x
3. Step 3: Cross multiply
   139,572x = 199,354.50 × 199,354.50
4. Step 4: Simplify right side
   139,572x = 39,742,216,670.25
5. Step 5: Solve for x
   x = 39,742,216,670.25/139,572
6. Step 6: Final answer
   x = 284,743.48