Finding the Third Proportional to 139,699.50 and 301,719

Step by Step Solution

1. Step 1: Write the proportion equation
   139,699.50 : 301,719 = 301,719 : x
2. Step 2: Convert to fraction form
   139,699.50/301,719 = 301,719/x
3. Step 3: Cross multiply
   139,699.50x = 301,719 × 301,719
4. Step 4: Simplify right side
   139,699.50x = 91,034,354,961
5. Step 5: Solve for x
   x = 91,034,354,961/139,699.50
6. Step 6: Final answer
   x = 651,644.10