Finding the Third Proportional to 17,931,154,941 and 39,240,146,421

Step by Step Solution

1. Step 1: Write the proportion equation
   17,931,154,941 : 39,240,146,421 = 39,240,146,421 : x
2. Step 2: Convert to fraction form
   17,931,154,941/39,240,146,421 = 39,240,146,421/x
3. Step 3: Cross multiply
   17,931,154,941x = 39,240,146,421 × 39,240,146,421
4. Step 4: Simplify right side
   17,931,154,941x = 1,539,789,091,141,519,147,008
5. Step 5: Solve for x
   x = 1,539,789,091,141,519,147,008/17,931,154,941
6. Step 6: Final answer
   x = 85,872,276,281.59