Finding the Third Proportional to 64,718,852.06 and 139,043,005.31

Step by Step Solution

1. Step 1: Write the proportion equation
   64,718,852.06 : 139,043,005.31 = 139,043,005.31 : x
2. Step 2: Convert to fraction form
   64,718,852.06/139,043,005.31 = 139,043,005.31/x
3. Step 3: Cross multiply
   64,718,852.06x = 139,043,005.31 × 139,043,005.31
4. Step 4: Simplify right side
   64,718,852.06x = 19,332,957,326,331,904
5. Step 5: Solve for x
   x = 19,332,957,326,331,904/64,718,852.06
6. Step 6: Final answer
   x = 298,722,191.61