Finding the Third Proportional to 912,189,008.25 and 1,991,582,647.88

Step by Step Solution

1. Step 1: Write the proportion equation
   912,189,008.25 : 1,991,582,647.88 = 1,991,582,647.88 : x
2. Step 2: Convert to fraction form
   912,189,008.25/1,991,582,647.88 = 1,991,582,647.88/x
3. Step 3: Cross multiply
   912,189,008.25x = 1,991,582,647.88 × 1,991,582,647.88
4. Step 4: Simplify right side
   912,189,008.25x = 3,966,401,443,316,796,416
5. Step 5: Solve for x
   x = 3,966,401,443,316,796,416/912,189,008.25
6. Step 6: Final answer
   x = 4,348,223,238.21