Finding the Third Proportional to 9,139,547,228 and 19,901,633,436

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139,547,228 : 19,901,633,436 = 19,901,633,436 : x
2. Step 2: Convert to fraction form
   9,139,547,228/19,901,633,436 = 19,901,633,436/x
3. Step 3: Cross multiply
   9,139,547,228x = 19,901,633,436 × 19,901,633,436
4. Step 4: Simplify right side
   9,139,547,228x = 396,075,013,420,913,197,056
5. Step 5: Solve for x
   x = 396,075,013,420,913,197,056/9,139,547,228
6. Step 6: Final answer
   x = 43,336,393,317.99