Finding the Third Proportional to 63,784.69 and 139,663.13

Step by Step Solution

1. Step 1: Write the proportion equation
   63,784.69 : 139,663.13 = 139,663.13 : x
2. Step 2: Convert to fraction form
   63,784.69/139,663.13 = 139,663.13/x
3. Step 3: Cross multiply
   63,784.69x = 139,663.13 × 139,663.13
4. Step 4: Simplify right side
   63,784.69x = 19,505,788,484.77
5. Step 5: Solve for x
   x = 19,505,788,484.77/63,784.69
6. Step 6: Final answer
   x = 305,806.76