Finding the Third Proportional to 91,072,278.49 and 139,898,158.38

Step by Step Solution

1. Step 1: Write the proportion equation
   91,072,278.49 : 139,898,158.38 = 139,898,158.38 : x
2. Step 2: Convert to fraction form
   91,072,278.49/139,898,158.38 = 139,898,158.38/x
3. Step 3: Cross multiply
   91,072,278.49x = 139,898,158.38 × 139,898,158.38
4. Step 4: Simplify right side
   91,072,278.49x = 19,571,494,718,901,792
5. Step 5: Solve for x
   x = 19,571,494,718,901,792/91,072,278.49
6. Step 6: Final answer
   x = 214,900,681.56