Finding the Third Proportional to 12,915,213 and 19,996,674

Step by Step Solution

1. Step 1: Write the proportion equation
   12,915,213 : 19,996,674 = 19,996,674 : x
2. Step 2: Convert to fraction form
   12,915,213/19,996,674 = 19,996,674/x
3. Step 3: Cross multiply
   12,915,213x = 19,996,674 × 19,996,674
4. Step 4: Simplify right side
   12,915,213x = 399,866,971,062,276
5. Step 5: Solve for x
   x = 399,866,971,062,276/12,915,213
6. Step 6: Final answer
   x = 30,960,927.32