Finding the Third Proportional to 91,072,747.50 and 139,898,886

Step by Step Solution

1. Step 1: Write the proportion equation
   91,072,747.50 : 139,898,886 = 139,898,886 : x
2. Step 2: Convert to fraction form
   91,072,747.50/139,898,886 = 139,898,886/x
3. Step 3: Cross multiply
   91,072,747.50x = 139,898,886 × 139,898,886
4. Step 4: Simplify right side
   91,072,747.50x = 19,571,698,304,040,996
5. Step 5: Solve for x
   x = 19,571,698,304,040,996/91,072,747.50
6. Step 6: Final answer
   x = 214,901,810.27