Finding the Third Proportional to 9,489,216,411 and 19,763,849,461.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,489,216,411 : 19,763,849,461.50 = 19,763,849,461.50 : x
2. Step 2: Convert to fraction form
   9,489,216,411/19,763,849,461.50 = 19,763,849,461.50/x
3. Step 3: Cross multiply
   9,489,216,411x = 19,763,849,461.50 × 19,763,849,461.50
4. Step 4: Simplify right side
   9,489,216,411x = 390,609,745,536,833,814,528
5. Step 5: Solve for x
   x = 390,609,745,536,833,814,528/9,489,216,411
6. Step 6: Final answer
   x = 41,163,540,656.95