Finding the Third Proportional to 63,784.13 and 139,687.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,784.13 : 139,687.50 = 139,687.50 : x
2. Step 2: Convert to fraction form
   63,784.13/139,687.50 = 139,687.50/x
3. Step 3: Cross multiply
   63,784.13x = 139,687.50 × 139,687.50
4. Step 4: Simplify right side
   63,784.13x = 19,512,597,656.25
5. Step 5: Solve for x
   x = 19,512,597,656.25/63,784.13
6. Step 6: Final answer
   x = 305,916.21