Finding the Third Proportional to 31,900,754 and 69,977,056

Step by Step Solution

1. Step 1: Write the proportion equation
   31,900,754 : 69,977,056 = 69,977,056 : x
2. Step 2: Convert to fraction form
   31,900,754/69,977,056 = 69,977,056/x
3. Step 3: Cross multiply
   31,900,754x = 69,977,056 × 69,977,056
4. Step 4: Simplify right side
   31,900,754x = 4,896,788,366,427,136
5. Step 5: Solve for x
   x = 4,896,788,366,427,136/31,900,754
6. Step 6: Final answer
   x = 153,500,709.31