Finding the Third Proportional to 91,919,333 and 139,788,871.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,919,333 : 139,788,871.50 = 139,788,871.50 : x
2. Step 2: Convert to fraction form
   91,919,333/139,788,871.50 = 139,788,871.50/x
3. Step 3: Cross multiply
   91,919,333x = 139,788,871.50 × 139,788,871.50
4. Step 4: Simplify right side
   91,919,333x = 19,540,928,595,243,512
5. Step 5: Solve for x
   x = 19,540,928,595,243,512/91,919,333
6. Step 6: Final answer
   x = 212,587,797.99