Finding the Third Proportional to 64,156.50 and 140,889

Step by Step Solution

1. Step 1: Write the proportion equation
   64,156.50 : 140,889 = 140,889 : x
2. Step 2: Convert to fraction form
   64,156.50/140,889 = 140,889/x
3. Step 3: Cross multiply
   64,156.50x = 140,889 × 140,889
4. Step 4: Simplify right side
   64,156.50x = 19,849,710,321
5. Step 5: Solve for x
   x = 19,849,710,321/64,156.50
6. Step 6: Final answer
   x = 309,395.16