Finding the Third Proportional to 91,919,332 and 139,788,870

Step by Step Solution

1. Step 1: Write the proportion equation
   91,919,332 : 139,788,870 = 139,788,870 : x
2. Step 2: Convert to fraction form
   91,919,332/139,788,870 = 139,788,870/x
3. Step 3: Cross multiply
   91,919,332x = 139,788,870 × 139,788,870
4. Step 4: Simplify right side
   91,919,332x = 19,540,928,175,876,900
5. Step 5: Solve for x
   x = 19,540,928,175,876,900/91,919,332
6. Step 6: Final answer
   x = 212,587,795.74