Finding the Third Proportional to 91,072,274 and 139,898,153

Step by Step Solution

1. Step 1: Write the proportion equation
   91,072,274 : 139,898,153 = 139,898,153 : x
2. Step 2: Convert to fraction form
   91,072,274/139,898,153 = 139,898,153/x
3. Step 3: Cross multiply
   91,072,274x = 139,898,153 × 139,898,153
4. Step 4: Simplify right side
   91,072,274x = 19,571,493,212,811,408
5. Step 5: Solve for x
   x = 19,571,493,212,811,408/91,072,274
6. Step 6: Final answer
   x = 214,900,675.62