Finding the Third Proportional to 90,109,264 and 139,591,032

Step by Step Solution

1. Step 1: Write the proportion equation
   90,109,264 : 139,591,032 = 139,591,032 : x
2. Step 2: Convert to fraction form
   90,109,264/139,591,032 = 139,591,032/x
3. Step 3: Cross multiply
   90,109,264x = 139,591,032 × 139,591,032
4. Step 4: Simplify right side
   90,109,264x = 19,485,656,214,825,024
5. Step 5: Solve for x
   x = 19,485,656,214,825,024/90,109,264
6. Step 6: Final answer
   x = 216,244,760.53