Finding the Third Proportional to 1,209,754,940 and 1,868,357,776

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,754,940 : 1,868,357,776 = 1,868,357,776 : x
2. Step 2: Convert to fraction form
   1,209,754,940/1,868,357,776 = 1,868,357,776/x
3. Step 3: Cross multiply
   1,209,754,940x = 1,868,357,776 × 1,868,357,776
4. Step 4: Simplify right side
   1,209,754,940x = 3,490,760,779,139,665,920
5. Step 5: Solve for x
   x = 3,490,760,779,139,665,920/1,209,754,940
6. Step 6: Final answer
   x = 2,885,510,663.13