Finding the Third Proportional to 9,139,547,216 and 19,901,633,416

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139,547,216 : 19,901,633,416 = 19,901,633,416 : x
2. Step 2: Convert to fraction form
   9,139,547,216/19,901,633,416 = 19,901,633,416/x
3. Step 3: Cross multiply
   9,139,547,216x = 19,901,633,416 × 19,901,633,416
4. Step 4: Simplify right side
   9,139,547,216x = 396,075,012,624,847,798,272
5. Step 5: Solve for x
   x = 396,075,012,624,847,798,272/9,139,547,216
6. Step 6: Final answer
   x = 43,336,393,287.78