Finding the Third Proportional to 91,919,342 and 139,788,885

Step by Step Solution

1. Step 1: Write the proportion equation
   91,919,342 : 139,788,885 = 139,788,885 : x
2. Step 2: Convert to fraction form
   91,919,342/139,788,885 = 139,788,885/x
3. Step 3: Cross multiply
   91,919,342x = 139,788,885 × 139,788,885
4. Step 4: Simplify right side
   91,919,342x = 19,540,932,369,543,224
5. Step 5: Solve for x
   x = 19,540,932,369,543,224/91,919,342
6. Step 6: Final answer
   x = 212,587,818.24